User's Manual
Pulse Triggering
TDS 620A, 640A & 644A User Manual
3Ć113
,$) '!( Set to 50% ,$) )' ( (-# $'!!$'$% ($ '&
$& ( %$#( !+, (+# ( % ' $ ( (&& '$)& '#! #
'( ( (&& !*! ($ (( %$#(
# ,$) '!( ( %)!' !'' Runt ( $'!!$'$% +!! (&& $#
'$&( %)!' (( &$''' $# (&'$! )( !' ($ &$'' '$# (&'$!
$& &&$''# ( &'( $ '( )% &)#( (&&#
&'' TRIGGER MENU➞ Type"#➞ Pulse %$%.)%➞
Class"#➞ Runt %$%.)%➞ Source"#➞ Ch1 Ch2 Ch3
Ax1 $# ( $& Ch4 Ax2 $# ( '
)&.
&'' Polarity"#➞ Positive Negative$&Either '
&'' Thresholds"# # '( ( )%%& # !$+& (&'$!' $&
&)#( (($# +( ( ' "#) '!($#' # ( ,% $& (
#&! %)&%$' #$
Polarity
' (' "#) (" ($ '%, ( &($# $ ( &)#( %)!'
&'' TRIGGER MENU➞ Type"#➞ Pulse %$%.)%➞
Class"#➞ Runt %$%.)%➞ Polarity"#➞ Positive Negative$&
Either '
Positive !$$ ' $& %$'(*.$# &)#( %)!''
Negative !$$ ' $& #(*.$# &)#( %)!''
Either !$$ ' $& $( %$'(* # #(* &)#( %)!''
Runt Operation